private void drawMultitouchDebugMarks(Canvas canvas) {
   if (currTouchPoint.isDown()) {
     float[] xs = currTouchPoint.getXs();
     float[] ys = currTouchPoint.getYs();
     float[] pressures = currTouchPoint.getPressures();
     int numPoints = Math.min(currTouchPoint.getNumTouchPoints(), 2);
     for (int i = 0; i < numPoints; i++)
       canvas.drawCircle(xs[i], ys[i], 50 + pressures[i] * 80, mLinePaintTouchPointCircle);
     if (numPoints == 2) canvas.drawLine(xs[0], ys[0], xs[1], ys[1], mLinePaintTouchPointCircle);
   }
 }
Esempio n. 2
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  /* (non-Javadoc)
   * @see com.ds.avare.MultiTouchController.MultiTouchObjectCanvas#setPositionAndScale(java.lang.Object, com.ds.avare.MultiTouchController.PositionAndScale, com.ds.avare.MultiTouchController.PointInfo)
   */
  public boolean setPositionAndScale(
      Object obj, PositionAndScale newObjPosAndScale, PointInfo touchPoint) {
    touchPointChanged(touchPoint);
    if (false == mCurrTouchPoint.isMultiTouch()) {

      /*
       * Do not move on drag
       */
      if (mDragPlanPoint >= 0) {
        return true;
      }

      /*
       * Do not move on multitouch
       */
      if (mDraw && mService != null) {
        float x = mCurrTouchPoint.getX() * mScale.getScaleFactor();
        float y = mCurrTouchPoint.getY() * mScale.getScaleFactor();
        /*
         * Threshold the drawing so we do not generate too many points
         */
        if (mPref.isTrackUp()) {
          double thetab = mGpsParams.getBearing();
          double p[] = new double[2];
          double c_x = mOrigin.getOffsetX(mGpsParams.getLongitude());
          double c_y = mOrigin.getOffsetY(mGpsParams.getLatitude());
          p = Helper.rotateCoord(c_x, c_y, thetab, x, y);
          mService.getDraw().addPoint((float) p[0], (float) p[1], mOrigin);
        } else {
          mService.getDraw().addPoint(x, y, mOrigin);
        }
        return true;
      }

      // Pan
      if (mPan.setMove(newObjPosAndScale.getXOff(), newObjPosAndScale.getYOff())) {
        /*
         * Query when we have moved one tile. This will happen in background.
         */
        loadTiles();
      }
    } else {

      // Zooming does not change drag
      mDragPlanPoint = -1;

      /*
       * on double touch find distance and bearing between two points.
       */

      if (mPointProjection == null) {
        double x0 = mCurrTouchPoint.getXs()[0];
        double y0 = mCurrTouchPoint.getYs()[0];
        double x1 = mCurrTouchPoint.getXs()[1];
        double y1 = mCurrTouchPoint.getYs()[1];

        double lon0, lat0, lon1, lat1;
        // convert to origin coord if Trackup
        if (mPref.isTrackUp()) {
          double c_x = mOrigin.getOffsetX(mGpsParams.getLongitude());
          double c_y = mOrigin.getOffsetY(mGpsParams.getLatitude());
          double thetab = mGpsParams.getBearing();
          double p0[], p1[];
          p0 = Helper.rotateCoord(c_x, c_y, thetab, x0, y0);
          p1 = Helper.rotateCoord(c_x, c_y, thetab, x1, y1);
          lon0 = mOrigin.getLongitudeOf(p0[0]);
          lat0 = mOrigin.getLatitudeOf(p0[1]);
          lon1 = mOrigin.getLongitudeOf(p1[0]);
          lat1 = mOrigin.getLatitudeOf(p1[1]);
        } else {
          lon0 = mOrigin.getLongitudeOf(x0);
          lat0 = mOrigin.getLatitudeOf(y0);
          lon1 = mOrigin.getLongitudeOf(x1);
          lat1 = mOrigin.getLatitudeOf(y1);
        }
        mPointProjection = new Projection(lon0, lat0, lon1, lat1);
      }

      /*
       * Clamp scaling.
       */

      mScale.setScaleFactor(newObjPosAndScale.getScale());
    }
    updateCoordinates();
    invalidate();
    return true;
  }